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dc.contributor.authorWalker, S.
dc.contributor.authorPiitulainen, H.
dc.contributor.authorManlangit, T.
dc.contributor.authorAvela, J.
dc.contributor.authorBaker, S. N.
dc.date.accessioned2020-04-17T09:14:40Z
dc.date.available2020-04-17T09:14:40Z
dc.date.issued2020
dc.identifier.citationWalker, S.; Piitulainen, H.; Manlangit, T.; Avela, J.; Baker, S. N. (2020). Older adults show elevated intermuscular coherence in eyes‐open standing but only young adults increase coherence in response to closing the eyes. Experimental Physiology, 105 (6), 1000-1011. DOI: 10.1113/EP088468
dc.identifier.otherCONVID_35233896
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/68585
dc.description.abstractUnderstanding neural control of standing balance is important to identify age‐related degeneration and design interventions to maintain function. Here, intermuscular coherence between antagonist muscle pairs around the ankle‐joint during standing balance tasks was investigated before and after strength‐training. Ten young (18–31 years; YOUNG) and 9 older adults (66–73 years; OLDER) stood on a force plate for 120 s with eyes open followed by 120 s with eyes closed before and after 14 weeks of strength‐training. Postural sway was quantified from center‐of‐pressure displacement based on 3‐D force moments. Electromyography (EMG) was recorded from the gastrocnemius medialis (GM), soleus (SOL) and tibilais anterior (TA) muscles of the right leg. Coherence between rectified EMG pairs (GM‐TA, SOL‐TA) were calculated for each 120‐s‐epoch separately. Postural sway was lower in YOUNG compared to OLDER in eyes‐open (6.8 ± 1.3 vs 10.3 ± 4.7 mm/s, P = 0.028) and eyes‐closed (10.9 ± 3.1 vs. 24.4 ± 18.3 mm/s, P = 0.032) tasks. For both muscle pairs, OLDER had more prominent common input over 4–14 Hz with eyes open, but when the proprioceptive demand was enhanced in the eyes‐closed task the YOUNG were able to further enhance their common input at 6–36 Hz (P < 0.05). Strength‐training reduced the instability from closing the eyes in OLDER but did not alter coherence. This may highlight a greater functional reserve in YOUNG than OLDER and possible emerging proprioceptive degeneration in OLDER. However, the findings question the functional role of coherence for balance.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.publisherWiley-Blackwell
dc.relation.ispartofseriesExperimental Physiology
dc.rightsIn Copyright
dc.subject.otheraging
dc.subject.othercorticomuscular
dc.subject.othercorticospinal coupling
dc.subject.otherintervention
dc.subject.othermotor control
dc.subject.otherstrength training
dc.titleOlder adults show elevated intermuscular coherence in eyes‐open standing but only young adults increase coherence in response to closing the eyes
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202004172808
dc.contributor.laitosLiikuntatieteellinen tiedekuntafi
dc.contributor.laitosFaculty of Sport and Health Sciencesen
dc.contributor.oppiaineBiomekaniikkafi
dc.contributor.oppiaineBiomechanicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.description.reviewstatuspeerReviewed
dc.format.pagerange1000-1011
dc.relation.issn0958-0670
dc.relation.numberinseries6
dc.relation.volume105
dc.type.versionacceptedVersion
dc.rights.copyright© The Author(s) 2020
dc.rights.accesslevelopenAccessfi
dc.relation.grantnumber287680
dc.subject.ysokoordinaatio (motoriikka)
dc.subject.ysomotoriikka
dc.subject.ysovoimaharjoittelu
dc.subject.ysoikääntyminen
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p38088
jyx.subject.urihttp://www.yso.fi/onto/yso/p496
jyx.subject.urihttp://www.yso.fi/onto/yso/p16233
jyx.subject.urihttp://www.yso.fi/onto/yso/p5056
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1113/EP088468
dc.relation.funderSuomen Akatemiafi
dc.relation.funderAcademy of Finlanden
jyx.fundingprogramTutkijatohtori, SAfi
jyx.fundingprogramPostdoctoral Researcher, AoFen
jyx.fundinginformationThis work was supported by a grant from the Academy of Finland (#287680) to Dr. Simon Walker and grants by the Academy of Finland (#296240, #304294, #307250) and Jane and Aatos Erkko foundation to Harri Piitulainen.


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